Originally Posted by
bullittwrench
Need help understanding this guys. For years I have been told too high of water velocity in the radiator and it wont pick up the heat properly. Thanks I just read Stewart Components tech tips on thermostats and restrictors. I understand now.
I can tell you I have reduced engine temp by adding a thermostat on several occasions.
Certainly, too much restriction would cause a vacuum at the pump inlet and cause cavitation. Too low pressure inside the cooling jackets and boiling occurs at the interface. You also need the correct difference in radiator inlet temp vs radiator exit temp. If that difference is small, you are not ejecting heat from the system.
The thermostat may or may not help because the water moves slower. It may also have to do with adding turbulence to the water flow. Turbulent flow removes more heat than laminar flow.
Last edited by MasterSbilt_Racer; 04-09-2018 at 08:36 AM.
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